rodent data — 9 things I got wrong before I got it right
The title is the argument: rodent data — 9 things I got wrong before I got it right. Here is the rest of it. Ask for the theoretical mass alongside the measured one. It is a one-line addition to a certificate and it converts a purity claim into an identity claim. Research-use-only material is not approved for human…
It is a fifteen-residue peptide with a published sequence, which makes synthesis straightforward and makes identity verification the meaningful test rather than an optional extra.
no clinical trial has established what these threads assert
Disagree — that is a rodent study and you are stating it as a human effect. The distance between those is the entire argument.
That is a purity figure, not an identity confirmation. Two different tests and only one answers the question asked.
Short peptides in solution are subject to hydrolysis and, depending on sequence, oxidation. Storage state and time in solution are practical variables that this board almost never discusses.
Has anyone posted an independent result on that batch?
Assumed regulatory status was static and it was not. Checked again this year and the answer had changed where I live.
identity testing matters more here than purity does
regulatory status varies by jurisdiction and it has moved recently
Not convinced. A high purity figure with no identity confirmation tells you the sample is homogeneous, not that it is what you ordered.
Not convinced.
Disagreeing with this line: that paper is in a rodent model and it is being quoted as a human result.
preclinical enthusiasm is not clinical evidence
research-use-only means not approved for human use, and here that covers everything
ask for the mass spectrum, not just the purity number
short peptides are cheap, which cuts both ways